Wiper blade

ABSTRACT

The invention is based on a wiper blade ( 12 ) with an elongate, spring-elastic carrying element ( 36 ) which is pre-curved in a concave fashion with respect to a vehicle window ( 22 ) and has two spring rails ( 52, 66 ) which run parallel to one another in a plane, and having a wiper strip ( 24 ) which is held with a web ( 34 ) of its head strip ( 30 ) between the spring rails ( 52, 66 ) via the carrier element ( 36 ), said spring rails ( 52, 66 ) being inserted in longitudinal grooves ( 32 ) on both sides of the web ( 34 ), wherein the wiper strip ( 24 ) is secured in the longitudinal direction ( 20 ) relative to the carrier element ( 36 ) at least close to one of the ends of said wiper strip ( 24 ). It is proposed that the spring rails ( 52, 66 ) have, at the longitudinal sides facing one another in their end regions, clips ( 60, 74 ) with cutters ( 62, 76 ) which, in the mounted state, cut into adjoining walls of the longitudinal grooves ( 32 ).

REFERENCE TO RELATED APPLICATIONS

This application is a 371 of PCT/EP2010/065055, filed on Oct. 8, 2010,and claims the benefit of German application no. 10 2010 042 096.4,filed on Oct. 7, 2010 and German application no. 10 2009 045 549.3,filed on Oct. 9, 2009.

BACKGROUND OF THE INVENTION

The invention is based on a wiper blade.

A wiper blade with an elongate, spring-elastic carrying element which ispre-curved in a concave fashion with respect to a vehicle window isknown from the Word Intellectual Property Organization patent WO2008/020003, said wiper blade having two spring rails and a wiper stripwhich is received by the carrying element in a manner allowing it to beexchanged. The wiper strip is fixedly connected at one of the endsthereof to a thickened portion, by means of which the wiper strip can befixed relative to the carrier element. This results from the fact thatthe thickened portion can be placed in position against an end face ofthe spring rail or a bridge, which connects the two spring rails to oneanother. In this position, the wiper strip is fixed relative to thecarrying element by means of an end cap. Said end cap can overlap thethickened portion and the bridge and fix them in position by means ofdetachable latching means. In the case of disassembly of the wiper stripof the wiper blade, the latching means are detached; thus enabling thewiper strip to be pulled out of the carrying element after removal ofthe end cap.

The German patent publication DE 10 2004 051 467 A1 discloses a wiperblade of the type in question. The carrying element of said wiper bladecomprises two spring rails which run parallel to each other and areconnected to each other at their ends by a bridge element. In order toreceive a wiper strip, the spring rails form a longitudinal gap, andtherefore the wiper strip can be threaded in the longitudinal directiononto the carrying element. Said wiper strip is secured in thelongitudinal direction relative to the carrying element by end caps. Thelatter have an element with a spike which is pressed at the end ofinstallation into a top strip of said wiper strip. In the fitted state,the spike bears against the bridge end face which faces away from theend of the wiper strip. In one exemplary embodiment, the spike islocated on a spring tongue which is pressed against the head strip by aflap with an eccentric. The pivot axis of the tongue runs transverselywith respect to the longitudinal direction of the wiper blade. Inanother embodiment, the spike is arranged directly on the flap, with thepivot axis of the flap being provided in the vicinity of the outer endface of the end cap.

The German patent publication DE 100 25 710 A1 discloses a wiper bladeof flat beam construction, which has a rubber elastic wiper strip with awiping lip. Lateral longitudinal grooves are provided between the wipinglip and a head strip, two spring rails that are pre-curved in a concavefashion with respect to the wiping lip being inserted in said grooves asa carrying element. Said two spring rails are held together by bridgeelements on the ends thereof and by a center connecting element. Thebridge elements comprise an integrally formed extension as a fixingmeans, which has on the free end thereof at least one projectiondirected towards the head strip. During installation, the extension isbent against the head strip so that the projection engages in said headstrip and the spring rails are fixed relative to the wiper strip in thelongitudinal direction. Finally, the bridge elements are covered withend caps.

The German patent publication DE 102 45 693 A1 discloses a wiper blade,which has, as carrying element, two spring rails which run in paralleland are connected to each other at their ends by a respective transverseclip. Furthermore, retaining means which fix the wiper strip relative tothe spring rails are provided. In order to remove the wiper strip, theretaining means can be easily detached. They are connected on one sideto the transverse clip and on the other side via a cohesive materialjoint, a frictional connection and/or via a form-fitting connection tothe wiper strip. In one embodiment, a gudgeon reaches through a guidebore of the transverse clip into the wiper strip and is held in theassembly position by an end cap which latches on the transverse clip bymeans of a spring element. The spring element can be released by anexternally operable element, and therefore the end cap and the gudgeoncan be released in order to change the wiper strip. In the fitted state,the end cap is supported by a closed end face, which faces the end ofthe wiper blade, on the associated end face of the transverse clip. Adifferent exemplary embodiment shows a retaining unit which ismanufactured from sheet metal and is pressed into the wiper strip bymeans of a gudgeon bent toward the wiper strip. During the assembly ofthe spring rails, the retaining unit is pushed under the transverse clipand is latched on said transverse clip between stop surfaces and aspring tongue. After removal of the end cap, the spring tongue can bepressed into a release position and thus the spring rails can beremoved.

SUMMARY OF THE INVENTION

According to the invention, the spring rails have clips with cutters atthe longitudinal sides facing one another in their end regions. In themounted state, the cutters cut into the adjoining walls of thelongitudinal grooves. By means of the clips with cutters, the springrails are directly fixed with respect to the wiper strip in thelongitudinal direction without substantial effort. An advantageousembodiment results if the spring rails have recesses on the longitudinalsides in the end regions thereof. In the mounted state, the recesses lieopposite to one another and arms branch out from said recesses, whichare directed outwardly at a flat angle with respect to the longitudinaldirection, wherein the arms of the recesses with the inner longitudinalsides of the spring rails form the clips, which on the end face facingthe recess are formed to a cutter. In the mounted state, the cutters arepressed into the web between the longitudinal grooves of the wiperstrip. This can advantageously occur, e.g., by means of an end cap thatis pushed onto the end of the spring rails and locks with the same.

According to a further embodiment of the invention, the spring railslikewise have recesses, which lie opposite one another in the mountedstate, on the longitudinal sides in the end regions thereof; however, inthis case have notches, which form the clips, at least at onedelimitation. Said notches are bent up with respect to the spring railsand have cutters on the projecting edges. If the spring rails are pushedlaterally into the longitudinal grooves, the cutters catch in the flanksof the longitudinal grooves so that the spring rails are also in thiscase fixed relative to the wiper strip directly in the longitudinaldirection. The longitudinal rails are advantageously held together,e.g., by the end cap. In principle, the clips including the cutters canbe provided at both ends of the spring rail. It is normally howeversufficient for them to be disposed only at one end and in factadvantageously on the outer end of the wiper blade so that the wiperstrip is subjected to pressure by means of centrifugal force duringoperation.

According to a further embodiment of the invention, a connecting piececomprising lateral guide profiles is guided on the spring rails andpresses the same together. In the mounted state, spring tongues on theguide profiles thereby engage in recesses of the spring rails. In sodoing, the cutters can engage in the web or respectively in the flanksof the longitudinal grooves of the wiper strip and hold said strip inposition. The spring tongues are advantageously formed by notches fromone of the limbs of the guide profiles and extend in each case up to theopposite limb. When disassembling the connecting piece, the springtongues can be moved from the detent position into a release position bymeans of openings in the guide profiles. In the assembled position, theguide profiles rest in each case with a hook on the end faces of thespring rails. The hook is formed from an elongated, bent limb on theouter end of the guide profiles.

In addition to the fixation resulting from the cutters on the clips ofthe spring rails, provision can be made for a second fixation. For thispurpose, a window, into which a clip originating at a delimitationprojects, is provided in a top wall, which connects the guide profilesto one another. A claw, which is bent in the direction toward the headstrip, is located on the free end of the clip, said clip penetrating thehead strip in the mounted state. In order to facilitate the assembly ofthe connecting piece, the limbs of the guide profiles are bent uptowards the outside on the ends facing the spring rails. The connectingpiece is advantageously manufactured as a sheet metal bending part. Itcan however also be manufactured from plastic in an injection moldingprocess.

This conversely applies to a connecting piece according to a furtherembodiment. The connecting piece is guided with lateral guide profileson the spring rails and presses said rails together, wherein centeringblocks on the guide profiles engage in the assembled position inrecesses on the outer longitudinal sides of the spring rails. Thecentering blocks rest in the longitudinal direction on the delimitationsof the recesses and are therefore secured in both directions relative tothe spring rails.

The guide profiles are connected to one another by a top wall, which hasa longitudinal channel for the head strip of the wiper strip, wherein awindow is provided in the top wall, in which a spring tongue originatingat a delimitation projects. A wedge shaped piece is provided on the freeend of said guide profiles, said wedge shaped piece being pressed by theend cap against the head strip in the mounted state. Assembly is alsoadvantageously facilitated in this case if the inner edges on the endface of the guide profiles are in each case chamfered.

BACKGROUND OF THE INVENTION

Further exemplary embodiments and advantages result from the followingdescription of the drawings. Exemplary embodiments of the invention aredepicted in the drawings. The drawings, the description and the claimscontain numerous features in combination. The specialist in the fieldwill also advantageously consider the features in isolation andintegrate them into useful further combinations.

In the drawings:

FIG. 1 shows a perspective view of a wiper blade,

FIG. 2 and FIG. 3 show in an enlarged scale a top view of the ends oftwo spring rails which are disposed in a plane parallel to one anotherand in mirror symmetry,

FIG. 4 shows a perspective depiction of an end of a wiper blade having adetachable connecting piece for the spring rails during assembly,

FIG. 5 shows the wiper blade pursuant to FIG. 4 shortly beforecompletion of the assembly,

FIG. 6 and FIG. 7 show a variant to FIG. 4 and FIG. 5,

FIG. 8 and FIG. 9 show a further variant to FIG. 4 and FIG. 5,

FIG. 10 and FIG. 11 show a wiper strip pursuant to FIG. 4 and FIG. 5,

FIG. 12 and FIG. 13 show a further variant pursuant to FIG. 4 and FIG.5,

FIG. 14 shows a variant comprising a bracket clip,

FIG. 15 shows a variant comprising a connecting piece connected to thecarrying element in a form-fit manner and

FIG. 16 shows a variant to FIG. 15.

DETAILED DESCRIPTION

A wiper blade 12 comprises a spring-elastic carrying element 36 which iselongated in a ribbon like manner in the form of two spring rails 52, 66which run parallel to and spaced apart from one another in a plane (FIG.1 and FIG. 3). Said spring rails are inserted with their inner edgestrips, which face each other, into longitudinal grooves 32 of a headstrip 30 of a wiper strip 24 while their outer edge strips laterallyprotrude to some extent out of the longitudinal grooves 32. A web 34 islocated between said longitudinal grooves 32.

A wiper lip 26 attaches to the head strip 30 via a rocker web 28 in thedirection of a vehicle window 22, said wiper lip sliding over thevehicle window 22 during a wiping movement in the direction of a doublearrow 18. For this purpose, a wiper arm 10 drives the wiper blade 12 viaa connecting device, the component 14 of which on the wiper blade sidecan be connected in an articulated and detachable manner to the wiperarm 10 whereas said component is fixedly seated in the central region ofsaid wiper blade 12 on the carrying element 36 thereof. At the sametime, said wiper arm 10 loads the wiper blade with a contact pressingforce 16 in the direction of the vehicle window 22. Said wiper arm 10and said vehicle window 22 are indicated by dashed/dotted lines. Duringoperation, the ends 40, 42 of the wiper blade 12 describe circular arcsduring a pivot movement in the direction of the double arrow 18 about awiper shaft that is not depicted, wherein the inner end 40 describes aninner circular arc and the outer end 42 an outer circular arc.

The most pronounced curvature of the vehicle window 22 is less than thecurvature of the unloaded wiper blade 12 (FIG. 1) lying with both ends40, 42 thereof on the vehicle window 22. When subjected to contactpressing force 16, the wiper blade 12 including the wiper lip 26 thereofis applied to the vehicle window 22 across the entire length thereof. Inso doing, a stress develops in the spring-elastic carrying element 36manufactured from metal or plastic. Said stress provides for a correctapplication of the wiper strip 24 or respectively the wiper lip 26 tothe vehicle window 22 across the entire length of said wiper strip orsaid wiper lip as well as for an even distribution of the contactpressing force.

Spoiler parts 38, which are guided on the carrying element 36, attach inthe longitudinal direction 20 to both sides of the connecting element 14on the wiper blade side. End caps 44 are provided on the ends 40, 42 ofthe wiper blade 12, are guided on and lock to the carrying element 36and cover the ends of the spoiler parts 38. Said spoiler parts 38 have aflow profile 48, whereas the flow profiles of the end caps are labeledwith the reference number 50.

The spring rails 52 or 66 are preferably fixed only on one end,advantageously on the outer end 42 of the wiper blade 12, relative tothe wiper strip 24. For this purpose, said spring rails 52 have recesseson the longitudinal sides in the end regions thereof, said longitudinalsides being opposite to one another in the mounted state. Arms 58, whichare outwardly directed at a flat angle with respect to the longitudinaldirection 20, branch off from these recesses. The arms 58 of therecesses 56 form wings 60 with the inner longitudinal sides of thespring rails 52, said wings being formed into cutters 62 located on theend faces facing the recesses 56 and adjacent to the web 34 between thelongitudinal grooves 32 of the wiper strip 24. During assembly, the endsof the spring rails 52 are pressed against the web 34 and said webtherefore penetrates to a certain extent into the recesses 56 and thecutters 62 catch in said web 34. Said spring rails 52 are held togetherby suitable means, e.g. by the end cap 44, which can lock with detentmeans, which are not specified in detail, in recesses 54 on the outerlongitudinal sides of said spring rails 52. The sections 64 of saidspring rails 52 protruding in the longitudinal direction 20 beyond therecesses 56 or respectively beyond the arms 58 have a reduced width withrespect to the central sections of said spring rails 52.

The spring rails 66 pursuant to FIG. 3 are different from the springrails 52 pursuant to FIG. 2 in that the recesses lying opposite to oneanother have a notch 72 in the longitudinal direction on one endthereof, whereby lugs 74 are formed. The lugs 74 of the spring rails 66are bent up towards a broadside of said spring rails 66, the protrudingedges being formed as cutters 76. When mounting the spring rails 66transversely to the longitudinal direction 20 of the wiper strip 24, thecutters 76 penetrate into the adjoining groove flanks of thelongitudinal grooves 32 and interlock with said groove flanks andtherefore said spring rails 66 are fixed in the longitudinal direction20 relative to the wiper strip 24. Said spring rails are then heldtogether by suitable means, e.g. by the end cap 44, which lock in theouter recesses 68.

According to one embodiment pursuant to FIG. 4 and FIG. 5, a connectingpiece 78 holds the spring rails 52 together instead of the end cap 44and therefore the spring rails are fixed in the longitudinal direction20 relative to the wiper strip 24. The connecting piece 78 has guideprofiles 80 on the longitudinal sides thereof. Said guide profiles havea U-shaped cross-section which is open to the inside. Said guideprofiles 80 are connected to each other by a top wall 82, which has alongitudinal channel 84 in the central region for receiving the headstrip 30. During assembly, said connecting piece 78 is pushed from theend face onto the spring rails 52 until hooks 96, which are integrallyformed on the ends of the guide profiles 80, bear against the end facesof said spring rails 52 (FIG. 5). In this position, spring tongues 94engage in the recesses 54 of said spring rails 52. The spring tongues 94are in each case notched from one of the limbs 98, 100 of the associatedguide profile and bent toward the opposing limb 98, 100. It isadvantageous for the guide profile to have an opening 92 in the regionof the spring tongue 94 so that the spring tongue 94 can again bedetached by a tool. In order to facilitate assembly, the limbs 98, 100are bent open a little bit upwards and downwards in opposite directionsto each other so that the connecting piece 78 can easily be pushed oversaid spring rails 52. The top wall 82 has a window 86, into which a clip88 projects, which has an angled claw 90 on the free end thereof. In theend position of the connecting piece 78, the claw 90 is pressed into thehead strip 30 of the wiper strip 24. This fixation can additionally oralone secure the relative position of said wiper strip 24 with respectto said spring rails 52. The connecting part 78 is advantageouslymanufactured from sheet metal. It can however also be manufactured fromplastic.

In the exemplary embodiment pursuant to FIG. 6 and FIG. 7, a similarconnecting piece 102 is provided, which is advantageously manufacturedfrom plastic. It has guide profiles 104 on the longitudinal sidesthereof, said guide profiles being connected to each other by a top wall108. A window 110 is provided in said top wall, wherein a spring tongue112 from a delimitation of the window 110 projects into said window 110.A wedge shaped piece 114, which runs to the end 42 of the wiper blade 12while being inclined toward the spring tongue 112, is integrally formedon the free end of the spring tongue 112. The connecting piece 102 hascentering blocks 106 in the region of the guide profiles 104 thereof,said centering blocks fitting into the recesses 54 on the outerlongitudinal sides of the spring rails 52. During assembly, theconnecting piece 102 is pushed frontally onto the spring rails 52,wherein the guide profiles 104 laterally widen until the guide blocks106 engage in the recesses 56. If the end cap 44 is pushed onto the endof the wiper blade 12, inner locking elements, which are not visible,press on the wedge shaped piece 114 and press the spring tongue 112 ontothe head strip 30, and therefore the carrying element 36 in the form ofspring rails 5 is additionally or alone secured to the fixationdescribed above relative to the wiper strip 24. The connecting piece 102is advantageously manufactured from plastic.

In the embodiment pursuant to FIG. 8 and FIG. 9, the spring rails 52 arebraced together by a bracket 116, which laterally encompasses saidspring rails 52 with claws 118, which rest against the delimitations inthe longitudinal direction of the recesses 54. In so doing, noses 122,which are oriented in the longitudinal direction 20 and are integrallyformed on the claws 118, grip said spring rails 52 from below. Furtherclaws 118 on the top side of the bracket 116 grip in the mounted stateinto the head strip 30 of the wiper strip 24 from above and thereforeconstitute a further fixation between the wiper strip 24 and said springrails 52.

The exemplary embodiment pursuant to FIG. 10 and FIG. 11 distinguishesitself from the preceding exemplary embodiment by virtue of the factthat a brace 124 made of thin sheet metal is stretched over the headstrip 30, wherein the limbs 126 of the brace 124 are bent around theouter longitudinal sides of the spring rails 52. During assembly, agudgeon 128, which is notched from the center part of the brace 127 andis bent towards the head strip 30, penetrates said head strip 30.

The exemplary embodiment pursuant to FIG. 12 and FIG. 13 distinguishesitself from the exemplary embodiment pursuant to FIG. 10 and FIG. 11 byvirtue of the fact that the spring rails 52 have apertures 130 betweenthe recesses 54 thereof and the outer end 42, through which the limbs126 of the holding clip 124 are guided; and after passing through theapertures 130, said limbs are preferably bent outwards.

The exemplary embodiment according to FIG. 14 shows a connecting piecein the form of a bracket clip 134, the limbs 136 of which have a firtree shaped profile 138 in the mounting direction. Said limbs 136 areinserted through the apertures 130 and secured in their position bymeans of the profile 138. In the embodiments pursuant to FIG. 15 andFIG. 16, the spring rails 52 are held together by connecting parts 140or 148 by said spring rails being connected transversely with respect tothe longitudinal direction 20 via a cohesive material joint that issubjected to a preload in the plane of the spring rails 52. Theconnecting part 140 (FIG. 15) is manufactured from thin sheet metal inthe shape of a bridge and is preferably connected at the feet 144thereof to said spring rails 52 by welding. In the mounted state, noses146 press against the head strip 30 and therefore additionally securethe wiper strip 24 relative to said spring rails 52.

The connecting part 148 pursuant to FIG. 16 is configured arrow-shapedand preferably has a thin wall thickness. It is pushed through the web34 between the back of the head strip 30 and the top surfaces of thespring rails 52 and therefore secures the relative position of the wiperstrip 24 with respect to said spring rails 52.

The invention claimed is:
 1. A wiper blade (12) having a longitudinalaxis and comprising an elongate, spring-elastic carrying element (36),which is pre-curved in a concave fashion with respect to a vehiclewindow (22) and has two spring rails (52, 66) which run parallel to thelongitudinal axis and parallel to one another in a plane, the springrails having respective inner and outer longitudinal sides andrespective end faces transverse to the longitudinal axis, the outerlongitudinal sides having therein respective recesses, and the wiperblade also comprising a wiper strip (24) which is held with a web (34)of a head strip (30) between the spring rails (52, 66) via the carryingelement (36), said spring rails being inserted in longitudinal grooves(32) on both sides of the web (34), wherein the wiper strip (24) hasends and is secured in the longitudinal direction (20) relative to thecarrying element (36) at least close to one of the ends of said wiperstrip, characterized in that the spring rails (52, 66) have, at theinner longitudinal sides facing one another in end regions, clips (60,74) with cutters (62, 76), which, in a mounted state, cut into adjoiningwalls of the longitudinal grooves (32), and characterized in that aconnecting piece (78) comprising lateral guide profiles (80) is guidedon the spring rails (52, 66) and presses said spring rails together, thelateral guide profiles being on opposite longitudinal sides of theconnecting piece, the longitudinal sides of the connecting piece beinggenerally parallel to the longitudinal axis, with each of the guideprofiles having a U-shaped cross-section, as viewed in a planeperpendicular to the longitudinal axis, which is open toward an inside,and each of the guide profiles has spaced limbs (98, 100) between whichan associated spring rail extends in the mounted state, wherein theguide profiles are connected to one another by a top wall (82), whichhas in a central region a longitudinal channel (84) receiving the headstrip of the wiper strip, wherein spring tongues (94) on the guideprofiles (80) engage in the mounted state in the respective recesses(54, 68) of said spring rails (52, 66), wherein the spring tongues (94)extend in each case toward an oppositely disposed one of the limbs (98,100) of an associated guide profile, and wherein hooks (96) areintegrally formed on outer ends of the guide profiles (80) and, duringassembly, the connecting piece is pushed from the end faces onto thespring rails until the hooks bear against the end faces of the springrails in the mounted state, and further comprising an end cap (44) thatat least partially covers the connecting piece.
 2. The wiper blade (12)according to claim 1, characterized in that the spring rails (66) have,on the inner longitudinal sides in the end regions thereof, recesses(70), which lie opposite to one another in the mounted state and have atleast at one delimitation in the longitudinal direction (20) notches(72), which form the clips (74), which are bent upward toward abroadside of the spring rails (66) and have the cutters (76) onprotruding edges, with which said clips catch in flanks of thelongitudinal grooves (32) in the mounted state.
 3. The wiper blade (12)according to claim 1, characterized in that the clips (60, 74) aredisposed only on an outer end (42) of the wiper blade (12).
 4. The wiperblade (12) according to claim 1, characterized in that the end cap (44)presses the spring rails (52, 66) into the longitudinal grooves (32)until the clips (60) with the cutters (62) thereof penetrate the web(34) or respectively until said clips (74) catch in flanks of thelongitudinal grooves (32).
 5. The wiper blade (12) according to claim 1,characterized in that the spring tongues (94) are formed in a region ofopenings (92) in the guide profiles (80) by notches in respective limbs(98, 100) of the guide profiles (80).
 6. The wiper blade (12) accordingto claim 5, wherein a window (86) is provided in the top wall (82), andwherein a clip (88) projects into said window, said clip in the mountedstate penetrating the head strip (30) with a claw (90) on a free endthereof.
 7. The wiper blade (12) according to claim 6, characterized inthat the limbs (98, 100) of the guide profile (80) are bent open in adirection facing away from the hooks and facing the spring rails priorto assembly to facilitate insertion of the associated spring railbetween the limbs so that the connecting piece can easily be pushed overthe spring rails.
 8. The wiper blade (12) according to claim 7, whereinthe connecting piece is made of sheet metal.
 9. The wiper blade (12)according to claim 1, wherein a window (86) is provided in the top wall(82), and wherein a clip (88) projects into said window, said clip inthe mounted state penetrating the head strip (30) with a claw (90) on afree end thereof.
 10. The wiper blade (12) according to claim 1,characterized in that the limbs (98, 100) of the guide profile (80) arebent open in a direction facing away from the hooks and facing thespring rails prior to assembly to facilitate insertion of the associatedspring rail between the limbs so that the connecting piece can easily bepushed over the spring rails.
 11. The wiper blade (12) according toclaim 1, wherein the connecting piece is made of sheet metal.
 12. Thewiper blade (12) according to claim 1, characterized in that the springrails (52) have, on the inner longitudinal sides in the end regionsthereof, recesses (56) which lie opposite to one another in the mountedstate, and arms (58) of the recesses branch out from said recesses, thearms being directed outwardly at an angle with respect to a longitudinaldirection (20), wherein the arms (58) of said recesses (56) with theinner longitudinal sides of the spring rails (52) form the clips (60),which on an end face facing the recess (56) are formed in each case toone of the cutters (62), which is pressed in the mounted state into theweb (34) between the longitudinal grooves (32) of the wiper strip (24).